Buggy code:
private static final short FLAG_HAS_ROOT_MODEL = 4 ; private static final short FLAG_VERSIONED = 8 ; private static final short FLAG_VISIBLE = 16 ; private static final short FLAG_RENDER_BODY_ONLY = 32 ; private static final short FLAG_IGNORE_ATTRIBUTE_MODIFIER = 64 ; private static final short FLAG_ENABLED = 128 ; protected static final short FLAG_RESERVED1 = 256 ; protected static final short FLAG_RESERVED2 = 512 ; protected static final short FLAG_RESERVED3 = 1024 ; protected static final short FLAG_RESERVED4 = 2048 ; private static final short FLAG_IS_RENDERED_ONCE = 4096 ; private short flags = ( ( ( Component . FLAG_VISIBLE ) | ( Component . FLAG_ESCAPE_MODEL_STRINGS ) ) | ( Component . FLAG_VERSIONED ) ) | ( Component . FLAG_ENABLED ) ; private static final IComponentValueComparator comparator = new IComponentValueComparator ( ) { public boolean compareValue ( Component component , Object newObject ) { } } ; private static Log log = LogFactory . getLog ( Component . class ) ; private List behaviours = null ; private String id ; private IModel model ; private MarkupContainer parent ; private int markupStreamPosition = - 1 ; private transient boolean renderAllowed = true ; private transient boolean rendering ; public class ComponentModelChange extends Change { private static final long serialVersionUID = 1L ; private IModel model ; public ComponentModelChange ( IModel model ) { } public void undo ( ) { } public String toString ( ) { } } public static interface IVisitor { public static final Object CONTINUE_TRAVERSAL = null ; public static final Object STOP_TRAVERSAL = new Object ( ) ; public Object component ( Component component ) { } } protected static final class EnabledChange extends Change { private static final long serialVersionUID = 1L ; private final Component component ; private final boolean enabled ; EnabledChange ( final Component component ) { } public void undo ( ) { } public String toString ( ) { } } protected static final class VisibilityChange extends Change { private static final long serialVersionUID = 1L ; private final Component component ; private final boolean visible ; VisibilityChange ( final Component component ) { } public void undo ( ) { } public String toString ( ) { } } public Component ( final String id ) { } public Component ( final String id , final IModel model ) { } public final Component add ( final IBehaviour behaviour ) { } public final void debug ( final String message ) { } public final void error ( final String message ) { } public final void fatal ( final String message ) { } public final MarkupContainer findParent ( final Class c ) { } public final MarkupContainer findParentWithAssociatedMarkup ( ) { } public final Application getApplication ( ) { } public final ApplicationPages getApplicationPages ( ) { } public final ApplicationSettings getApplicationSettings ( ) { } public final String getClassRelativePath ( ) { } public IConverter getConverter ( ) { } public final boolean getEscapeModelStrings ( ) { } public final FeedbackMessage getFeedbackMessage ( ) { } public final String getId ( ) { } public final Locale getLocale ( ) { } public final Localizer getLocalizer ( ) { } public final Serializable getMetaData ( final MetaDataKey key ) { } public IModel getModel ( ) { } public final Object getModelObject ( ) { } public final String getModelObjectAsString ( ) { } public final Page getPage ( ) { } public final IPageFactory getPageFactory ( ) { } public final String getPageRelativePath ( ) { } public final MarkupContainer getParent ( ) { } public final String getPath ( ) { } public final Request getRequest ( ) { } public final RequestCycle getRequestCycle ( ) { <START_BUG> return getSession ( ) . getRequestCycle ( ) ; <END_BUG> } public final Resource getResource ( ) { } public final Response getResponse ( ) { } public final Session getSession ( ) { } public final String getString ( final String key ) { } public final String getString ( final String key , final IModel model ) { } public final String getString ( final String key , final IModel model , final String defaultValue ) { } public final String getStyle ( ) { } public String getVariation ( ) { } public final boolean hasErrorMessage ( ) { } public final boolean hasFeedbackMessage ( ) { } public final void info ( final String message ) { } public final boolean isAncestorOf ( final Component component ) { } public boolean isEnabled ( ) { } public boolean isVersioned ( ) { } public boolean isVisible ( ) { } public final boolean isVisibleInHierarchy ( ) { } public final void modelChanged ( ) { } public final void modelChanging ( ) { } public final Page newPage ( final Class c ) { } public final Page newPage ( final Class c , final PageParameters parameters ) { } public void onRequest ( ) { } public final void remove ( ) { } public final void render ( ) { } public final void renderComponent ( final MarkupStream markupStream ) { } public final void rendered ( ) { } public final boolean sameRootModel ( final Component component ) { } public final boolean sameRootModel ( final IModel model ) { } public final Component setEnabled ( final boolean enabled ) { } protected final void validateMarkupStream ( final MarkupStream markupStream ) { } private boolean isRendering ( ) { } public final Component setEscapeModelStrings ( final boolean escapeMarkup ) { } public final void setMetaData ( final MetaDataKey key , final Serializable object ) { } public Component setModel ( final IModel model ) { } public final Component setModelObject ( final Object object ) { } public final void setRedirect ( final boolean redirect ) { } public final Component setRenderBodyOnly ( final boolean renderTag ) { } public final void setResponsePage ( final Class cls ) { }

Fix:
return RequestCycle . get ( ) ;